The Obama adminstration is to file a brief urging the Supreme Court to strike down Proposition 8

The Obama administration is to file a brief asking the Supreme Court to strike down California’s ban on equal marriage, and to take the view that other, similar bans, are unconstitutional.

According to a source familiar with the Obama administration’s briefing on the Proposition 8 case, the controversial legislation which bans equal marriage in the state, lawyers plan to file a brief before the deadline at midnight on Thursday.